/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.servicecomb.samples;

import org.apache.servicecomb.registry.sc.SCRegistration;
import org.apache.servicecomb.registry.sc.SCRegistrationInstance;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class InstanceInfoServiceImpl implements InstanceInfoService {

  @Autowired
  private SCRegistration scRegistration;

  /**
   * {@inheritDoc}
   */
  @Override
  public String getInstanceId() {

    SCRegistrationInstance instance = scRegistration.getMicroserviceInstance();
    if (instance == null) {
      throw new IllegalStateException(
          "unable to find any service instances, maybe there is problem registering in service center?");
    }
    return instance.getInstanceId();
  }
}
